Overview
Uncle Sam is a 1996 American black comedy slasher film directed by William Lustig, written by Larry Cohen, and starring Isaac Hayes.
In the film, Sam Harper is killed by friendly fire during a military operation in Kuwait. His corpse is returned to his family in time for the Independence Day celebrations, but then returns to life as a revenant. Sam dresses himself in an Uncle Sam costume and goes on a killing spree. His widow and his sister inform Sam's nephew that Sam was a psychopath in life, and that he joined the military in hopes of satisfying his bloodlust. Meanwhile, Sam blames his former mentor for glorifying war in his tales, and for inspiring him to join the military.
Plot
In Kuwait, a military unit uncovers an American helicopter that was downed by friendly fire. As the wreckage is inspected, Master Sergeant Sam Harper, one of the burnt bodies within, springs to life and kills a sergeant and a major. He finally dies after muttering, "Don't be afraid, it's only friendly fire!"
Sam's body is eventually delivered to his hometown of Twin Rivers, which is preparing for Independence Day. Sam's widow Louise is given custody of the casket containing Sam's remains, which are left in the home of Sam's estranged sister Sally, who lives with her patriotic young son, Jody. Sam reanimates as a revenant in the early hours of the Fourth of July, and proceeds to kill and steal the costume of a perverted Uncle Sam. Sam then makes his way to a cemetery, where he murders two of three juvenile delinquents who had vandalized tombstones, and desecrated an American flag.
From Wikipedia (CC BY-SA 4.0).